<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <div class="title-container">
        <h3 class="title">
          <img src="@/assets/common/login-logo.png" alt="">
        </h3>
      </div>

      <el-form-item prop="mobile">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.mobile"
          placeholder="用户名"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="密码"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon
            :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"
          />
        </span>
      </el-form-item>

      <el-button
        class="loginBtn"
        :loading="loading"
        type="primary"
        style="width: 100%; margin-bottom: 30px"
        @click.native.prevent="handleLogin"
      >登录 {{ $store.getters.token }} </el-button>

      <div class="tips">
        <span style="margin-right: 20px">账号: 13800000002</span>
        <span> 密码: 123456</span>
      </div>
    </el-form>
  </div>
</template>

<script>
import { validMobile } from '@/utils/validate'
import { mapActions } from 'vuex'

export default {
  name: 'Login',
  data() {
    // const validateFn = (rule, value, callback) => {
    //   // 可以自定义校验函数, 每个校验函数都能就收到三个参数
    //   // 1. 规则对象
    //   // 2. 当前输入值
    //   // 3. 放行的回调函数
    //   // 校验过后有两种可能,
    //   // 1. 成功 直接调用 callback()
    //   // 2. 失败 创建一个错误对象(js 内置对象) new Error(提示语) 传入 callback
    //   // callback(new Error('错误提醒'))
    //   // 假设现在我忍为只有 123 才是合法的手机号
    //   if (value === '123') {
    //     callback()
    //   } else {
    //     callback(new Error('手机号必须是 123'))
    //   }
    // }
    const validateUsername = (rule, value, callback) => {
      // 只需要在这里校验格式即可
      // const pattern = /^1[3-9]\d{9}$/
      // if (pattern.test(value)) {
      if (validMobile(value)) {
        callback()
      } else {
        callback(new Error('请输入合法手机号'))
      }
      // if (!validUsername(value)) {
      //   callback(new Error('Please enter the correct user name'))
      // } else {
      //   callback()
      // }
    }
    // const validatePassword = (rule, value, callback) => {
    //   if (value.length < 6) {
    //     callback(new Error('The password can not be less than 6 digits'))
    //   } else {
    //     callback()
    //   }
    // }
    return {
      loginForm: {
        mobile: '13800000002',
        password: '123456'
      },
      loginRules: {
        mobile: [
          // 可以通过函数的形式进行自定义校验
          // {
          //   required: true, trigger: 'blur', validator: validateFn
          // }
          { required: true, trigger: 'blur', message: '手机号不能为空' },
          { validator: validateUsername, trigger: 'blur' }
        ],
        password: [
          { required: true, trigger: 'blur', message: '密码不能为空' },
          { min: 6, max: 16, trigger: 'blur', message: '密码必须在6到16位之间' }
        ]
        // mobile: [
        //   { required: true, trigger: 'blur', validator: validateUsername }
        // ],
        // password: [
        //   { required: true, trigger: 'blur', validator: validatePassword }
        // ]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    ...mapActions(['user/login']),
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    async handleLogin() {
      this.loading = true
      // try / catch 或者 promise 的 .then / .catch
      // 都可以在最后添加一个 finally 执行无论成功失败都要执行的代码
      try {
        await this.$refs.loginForm.validate()
        // this.$store.dispatch('user/login', this.loginForm)
        // this.user/login 是一个不合法的写法
        await this['user/login'](this.loginForm)
        this.$router.push('/')
      } catch (error) {
        console.log(error)
      } finally {
        this.loading = false
      }

      // login(this.loginForm).then(res => {
      //   console.log(res.data)
      //   this.$store.commit('user/setToken', res.data.data)
      // })
      // this.$refs.loginForm.validate((valid) => {
      //   if (valid) {
      //     this.loading = true
      //     this.$store
      //       .dispatch('user/login', this.loginForm)
      //       .then(() => {
      //         this.$router.push({ path: this.redirect || '/' })
      //         this.loading = false
      //       })
      //       .catch(() => {
      //         this.loading = false
      //       })
      //   } else {
      //     console.log('error submit!!')
      //     return false
      //   }
      // })
    }
  }
}
</script>

<style lang="scss">
  /* 修复input 背景不协调 和光标变色 */
  /* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

  $bg: #283443;
  $light_gray: #68b0fe;
  $cursor: #fff;

  @supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
      color: $cursor;
    }
  }

  /* reset element-ui css */
  .login-container {
    .el-input {
      display: inline-block;
      height: 47px;
      width: 85%;

      input {
        background: transparent;
        border: 0px;
        -webkit-appearance: none;
        border-radius: 0px;
        padding: 12px 5px 12px 15px;
        color: $light_gray;
        height: 47px;
        caret-color: $cursor;

        &:-webkit-autofill {
          box-shadow: 0 0 0px 1000px $bg inset !important;
          -webkit-text-fill-color: $cursor !important;
        }
      }
    }

    .el-form-item {
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(255, 255, 255, 0.7); // 输入登录表单的背景色
      border-radius: 5px;
      color: #454545;
    }

    .loginBtn {
      background: #407ffe;
      height: 64px;
      line-height: 32px;
      font-size: 24px;
    }

    .el-form-item__error {
      color: #fff;
    }
  }
</style>

<style lang="scss" scoped>
  $bg: #2d3a4b;
  $dark_gray: #889aa4;
  $light_gray: #eee;

  .login-container {
    background-image: url("~@/assets/common/login.jpg");
    background-position: center;
    min-height: 100%;
    width: 100%;
    background-color: $bg;
    overflow: hidden;

    .login-form {
      position: relative;
      width: 520px;
      max-width: 100%;
      padding: 160px 35px 0;
      margin: 0 auto;
      overflow: hidden;
    }

    .tips {
      font-size: 14px;
      color: #fff;
      margin-bottom: 10px;

      span {
        &:first-of-type {
          margin-right: 16px;
        }
      }
    }

    .svg-container {
      padding: 6px 5px 6px 15px;
      color: $dark_gray;
      vertical-align: middle;
      width: 30px;
      display: inline-block;
    }

    .title-container {
      position: relative;

      .title {
        font-size: 26px;
        color: $light_gray;
        margin: 0px auto 40px auto;
        text-align: center;
        font-weight: bold;
      }
    }

    .show-pwd {
      position: absolute;
      right: 10px;
      top: 7px;
      font-size: 16px;
      color: $dark_gray;
      cursor: pointer;
      user-select: none;
    }
  }
</style>
